// Copyright (C) 2025 Kumo inc.
// Author: Jeff.li lijippy@163.com
// All rights reserved.
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published
// by the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.
//

#include "test.hpp"

#include "verify_meta.hpp"
#include "verify_rule.hpp"

namespace rothar
{
   int at_counter = 0;

   template< typename Rule >
   struct at_action
   {};

   template<>
   struct at_action< alpha >
   {
      static void apply0()
      {
         ++at_counter;
      }
   };

   void unit_test()
   {
      ROTHAR_PEGTL_TEST_ASSERT( at_counter == 0 );

      verify_meta< not_at<>, internal::failure >();
      verify_meta< not_at< eof >, internal::not_at< eof >, eof >();
      verify_meta< not_at< eof, any >, internal::not_at< internal::seq< eof, any > >, internal::seq< eof, any > >();

      verify_analyze< not_at< eof > >( __LINE__, __FILE__, false, false );
      verify_analyze< not_at< any > >( __LINE__, __FILE__, false, false );

      verify_rule< not_at< eof > >( __LINE__, __FILE__, "", result_type::local_failure, 0 );
      verify_rule< not_at< eof > >( __LINE__, __FILE__, " ", result_type::success, 1 );
      verify_rule< not_at< any > >( __LINE__, __FILE__, "", result_type::success, 0 );
      verify_rule< not_at< any > >( __LINE__, __FILE__, "a", result_type::local_failure, 1 );
      verify_rule< not_at< any > >( __LINE__, __FILE__, "aa", result_type::local_failure, 2 );
      verify_rule< not_at< any > >( __LINE__, __FILE__, "aaaa", result_type::local_failure, 4 );

#if defined( __cpp_exceptions )
      verify_rule< must< not_at< alpha > > >( __LINE__, __FILE__, "a", result_type::global_failure, 1 );
      verify_rule< must< not_at< alpha, alpha > > >( __LINE__, __FILE__, "aa1", result_type::global_failure, 3 );
#endif

      {
         memory_input in( "a", 1, __FILE__ );
         parse< alpha, at_action >( in );
         ROTHAR_PEGTL_TEST_ASSERT( at_counter == 1 );
      }
      {
         memory_input in( "1", 1, __FILE__ );
         parse< not_at< alpha >, at_action >( in );
         ROTHAR_PEGTL_TEST_ASSERT( at_counter == 1 );
      }
      {
         memory_input in( "a", 1, __FILE__ );
         parse< not_at< alpha >, at_action >( in );
         ROTHAR_PEGTL_TEST_ASSERT( at_counter == 1 );
      }
   }

}  // namespace rothar

#include "main.hpp"
